Referenced by|
| US4212479 | 18 Sep 1978 | 15 Jul 1980 | | Roller skate | | US4603868 | 18 Aug 1983 | 5 Aug 1986 | | Roller skate undercarriage with adjustable rollers | | US5791662 | 15 May 1997 | 11 Aug 1998 | | In-line, interchangeable roller-ice skate | | US5951028 | 28 Jul 1997 | 14 Sep 1999 | Land Roller, Inc. | Roller skate | | US6273437 | 10 Jul 1999 | 14 Aug 2001 | Land Roller, Inc. | Roller skate | | US6443464 | 9 Aug 2001 | 3 Sep 2002 | Land Roller, Inc. | Roller skate |
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